using Camera Culling masks with ARkit

Unity Engine
,
1

I have been trying to implement culling masks to my model with the ARkit plugin, I have managed to set up the model using the standard UnityARkitScene, but for some reason when I deploy my own script to switch between different layers, the model moves to a new location in the AR scene every time I switch off layers in the program.
I am using the UnityARHitTestExample script to position my model in the scene, but I cannot figure out why the position of the model changes when i run my own script below??

this is connected to a button:
if (siteModelVisible==false){
cam.GetComponent.().cullingMask = 1 << 10| 1<< 11;
}
please could someone help me figure out why the model position in AR is impacted by switching off layers?

Many Thanks

2

Ok so it appears touching the screen to press the buttons was actually moving the model to the location of the buttons.